The highlight for U.S. travelers likely will be WestJet's new nonstop route between Calgary and New York JFK, a route that will launch April 27. The carrier will fly one daily round-trip flight on the route using Boeing 737 jets.

Calgary is home to WestJet's headquarters as well as one of the carrier's biggest bases.

WestJet also plans to add flights between Las Vegas and the Alberta city of Fort McMurray. The airline will start flying the route June 24, offering two flights a week.

Elsewhere, WestJet plans to increase the number flights it offers on 20 existing routes and will convert five seasonal routes into year-round service.

"The latest schedule reflects the varied needs of the many guests who choose WestJet," John Weatherill, WestJet's director of Network and Schedule Planning, says in a statement.

"We have added in-flight service and amenities for those guests travelling for business and additional flight frequency and convenient, non-stop service across all points of the network," Weatherill adds. "Our goal is to make it even easier to do business affordably and efficiently with our airline. Leisure travelers asking for more frequency to WestJet's southern destinations will also see their options increase with today's announcement."

In making its Monday announcement, WestJet also touted other upcoming routes and changes - most notably the launch of the company's first trans-Atlantic route. That route - between Toronto and Dublin - is scheduled to begin June 15.